✓ VERIFIED
May 16, 2026
not what I needed. description wasn't very clear but not worth sending back. oh well just have to be more careful next time
COMETIC
SKU: 68-9850
Cometic Evo Big Twin EST Gasket Kit — Harley-Davidson Electra Glide Classic, Softail Custom, Softail Heritage Classic (1984-1999)
$140.45
Free shipping on orders $99+ · Best value guarantee
affirm
From $11.70/mo with Affirm.
See if you prequalify
OUT OF STOCK
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returns — see policy
Authorized Dealer — sourced direct
Cometic Evo Big Twin EST gasket kit supplies every gasket, seal, washer, and O-ring needed for a complete engine overhaul on Evo Big Twin V-twin motorcycles. Features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals for reliable sealing under high performance.
Features
- MLS head gaskets
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- Complete overhaul kit — all gaskets, seals, washers, and O-rings included
- AFM material components
Specifications
- Brand: Cometic
- Manufacturer Part #: C9850
- Length: 8.9 in
- Width: 7.4 in
- Height: 2.1 in
- Weight: 0.8 lbs
Fitment
Fits Evo Big Twin V-twin motorcycles, including Harley-Davidson Evo models.
Frequently Asked Questions
What's included in this kit?
Every gasket, seal, washer, and O-ring needed for a complete engine overhaul — MLS head gaskets, base gaskets, valve stem seals, and more.
Will this fit my Evo Big Twin?
Yes — this kit is designed for Evo Big Twin engines. Verify your specific model year and displacement with the manufacturer if you're unsure.
What materials are used?
MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material components for durability and heat resistance.
Do I need any other gaskets or seals after this kit?
This is a complete overhaul kit, so it should supply everything needed. Check your engine manual to confirm no model-specific additions are required.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9850 |
| WEIGHT | 0.8 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.36
14 RATINGS
5★
11
4★
0
3★
1
2★
1
1★
1
✓ VERIFIED
Mar 8, 2026
Gasket
Working fine was for my brother's bike
✓ VERIFIED
Oct 25, 2024
Works Fine at a lower cost
I usually have an OEM from Harley Davidson, I have used this twice on my 04 Electraglide, no leaks or issues. At a much lower price.
✓ VERIFIED
Jun 8, 2024
A mediocre gasket
I didn’t use this gasket after removing the derby and seeing the Harley gasket that I removed. No comparison in quality. I ended up going to the local dealer and bought an O.E. gasket.
✓ VERIFIED
Jun 6, 2023
A good buy
The gasket fit nicely and no leaks so far . The fitment was spot on .
✓ VERIFIED
May 4, 2023
There is nothing on them indicating they are actually Cometic gaskets. Are they Substitutes?
